We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. NASHVILLE, Tenn. — Successful multifocal contact lens ...

Rigid gas permeable lenses are usually the lenses of choice after RK. They provide good visual acuity and tear exchange, they move well upon the cornea, and they allow high oxygen transmissibility to ...

Scleral lenses are large contact lenses that rest on the sclera, the white part of the eye, rather than the cornea. The lenses contain saline, so the cornea stays moist, which is helpful for people ...

Astigmatism is a common condition that affects how your cornea directs light to your retina. It’s a refractive error that occurs due to an abnormal or uneven ...